Wear monitoring devices who road surface that highway arouses subsides under tunnel

The utility model belongs to the technical field of the road monitoring, especially, relate to a wear monitoring devices who road surface that highway arouses subsides under tunnel. Monitoring devices sets up the surveyor's level in highway dirt road shoulder department including setting firmly the monitoring mound in the central median department of highway, the monitoring mound includes basis and pier shaft, and the basis lies in central median ground below, and the pier shaft lies in central median ground top and pier shaft both sides and high first levelling rod such as all is equipped with, and the datum point department in the highway side slope is equipped with the second levelling rod, the collimation axis of surveyor's level, first levelling rod and second levelling rod lie in same horizontal line. The utility model discloses simple structure on guaranteeing survey crew safety and do not influence the basis of highway traffic normal operating, realizes the rapid survey to the road surface settling da